My extension & my neighbour

[Gummo]

Don't need to.
If he wants to argue this point he will have to seek legal advice and spend his time and money.
In writing, tell him you do not authorise any kind of structure, temporary or permanent to be fixed to your wall.
Then he will be his call to do the wrong thing.

I think I'll raise it gently the next time we bump into each other and I'll ask him to illustrate more clearly what his plans are. But, any suggestions as to the gentlest way of saying I don't want you adding your structure to my wall?

 

[Harry Bloomfield]

It really does need to be in writing and a copy kept. Without that, he could just say that you seemed agreeable to it. There is no gentle way to tell him.

 

[garyo]

As some of the previous comments , I'd be most worried about a) damp being introduced through non existent flashing etc, 2) noise from people talking at eaves height percolating into your top room. That could be really annoying if it's a bedroom.

 

[Gummo]

As some of the previous comments , I'd be most worried about a) damp being introduced through non existent flashing etc, 2) noise from people talking at eaves height percolating into your top room. That could be really annoying if it's a bedroom.

Those have been uppermost in my mind besides the structural impact on my wall.